Diesel Consumption

[craig_c]

Hi. we took delivery of our Redbay Expedition in late may 06.

We have kept reciepts of every diesel fill up from new and ran the engine at roughly 2300-2700 revs cruising.

We currently are burning 4 gallons an hour with a yamaha 422

What are other boats getting?

[Brian]

What does that work out to at litres per nmile?

[Alan]

Originally Posted by Brian

What does that work out to at litres per nmile?

Oh c'mom Brian...4 galls per hour, roughly equals 18l per hr, hmm, lets say 2300-2700 knots gives what, 22-25kts? so thats somewhere around 0.8-0.9l per mile? Impressive economy I'd say.

[Brian]

Well Alan, your assumptions may be correct-but thats what they are, assumptions.
Hmm. Lets see-wish I could cruise at 2700rpm and get 25knots!

[craig_c]

Originally Posted by Brian

Well Alan, your assumptions may be correct-but thats what they are, assumptions.
Hmm. Lets see-wish I could cruise at 2700rpm and get 25knots!

We are!!!!

[alt]

Hi there,
I have a Mercruiser 1.7 Turbo Diesel (120HP)
I cruise @ 25knts, 3800RPM (Yes high I know, but the manual states upto 4400RPM WOT is safe)
We burn 25liters on a 26mile trip

So lets just say 1l per mile

Having said that, the boat weighs 1.4tonne dry, I always keep extra fuel on board aswell as supplies and crew, we're talking about 1.7tonne

I'm well pleased, costs less to run than my old Yamaha 75hp!

[M.Thornton]

hi craig

we have 2x yamaha 421s on our 11m redbay
we use approx 5galls per hr on each engine
at 2800-3000 rpm and cruise at average 27 kts

we have been in a marina for 3 months and have
noticed a loss of approx 3 kts due to weed build
up (yes we antifouled!)

mike t.

[Pete7]

Pacific 22, about 2 tonnes, with larger 22" prop.

1 lpm at 22 knots (kids driving)
1.5 lpm at 30 knots.

Pete

[Andy Gee]

Originally Posted by M.Thornton

hi craig

we have 2x yamaha 421s on our 11m redbay
we use approx 5galls per hr on each engine
at 2800-3000 rpm and cruise at average 27 kts

we have been in a marina for 3 months and have
noticed a loss of approx 3 kts due to weed build
up (yes we antifouled!)

mike t.

Hi Mike,
Time you got that auld diving suit looked out and gave her arse a wee buff!!.
I am burning a little less than you about 4.5 when under 6 on board @ 28Knts (2850 rpm)and about 5.5 when full 14 on board @ 28knts(3000rpm).
Andy

[Rick]

Hi Craig,

I have been running the Redbay 8.4 expedition canopy version since March with the ME422, and also recorded all the fuel used. I am using approx 20l an hour cruising between 2800-2900 which gives 27Kn with 4 people.